Honestly, this Eclette is also at fault, I know she can't help the fact that the asshole of a ML fell to her but I pretty sure she would have known Shayla got it for Tesrick and she took it anyway.
I wish would be addressed more often, why can't the MC ever go up to the villainess and be like "Hey, I know you love him, but we both love each other and want to get married" or at least do something instead of pursuing an engaged man, especially when they are commoners, I pretty sure the families would have them killed back in those days.